摘要
目的探讨脑内海绵状血管瘤MRI表现及梯度回波(GRE)T2*序列成像的诊断价值。方法回顾性分析15例经病理证实的脑内海绵状血管瘤患者的MRI资料,分析海绵状血管在以上各序列上的信号特点,重点分析GRET2*序列信号特点及对病灶显示能力。结果 15例脑内海绵状血管瘤患者MRI共提示出18例病灶,其中12例病灶在T2WI、T1WI均呈网状、高低混杂信号;4例病灶在T2WI、T1WI均呈高信号;2例病灶T1WI、T2WI均呈等信号,16个病灶T2WI灶周具有"铁环"征,2例病例在GRET2*下发现合并其它隐匿性血管畸形。GRET2*显示的病灶范围包括瘤体及灶周含铁血黄素区域,敏感性高。结论 MRI是诊断脑内海绵状血管瘤的首选方法,常规序列与GRET2*序列相结合,能准确全面提供诊断信息,且GRET2*序列提高了隐匿性血管畸形检出率。
Objective To investigate the MR1 manifestations of cerebral cavernous hemangioma and gradient echo (GRE) T2* imaging diagnosis value, nechods MRI data was retrospectively analyzed in 15 cases with pathologically confirmed cerebral cavernous hemangioma; each sequence signal characteristics of the cavernous hemangioma was ana- lyzed; GRE T2* sequence signal and the characteristics of the lesion showed ability were focused. Results Of the 15 cases, MRI revealed 18 lesions, including 12 lesions showed reticular low-high signal in T2WI, T1WI; 4 lesions showed high signal in T2WI, T1WI;2 cases lesions were T1WI, T2WI equal signal; 16 lesions were with T2WI foci week"hoop" syndrome;2 cases in GRE T2* found that combined with other occult vascular malformation. GRE T2* showed lesions in- cluding hemangioma and focal peripheral hemosiderin area with high sensitivity. Conclusions MRI is a preferred method for diagnosis of cerebral cavernous hemangioma. Combined conventional sequence and GRE T2* sequences can accurately provide diagnostic information, and GRE T2* sequences improves the detection rate of occult vascular malformation.
出处
《全科医学临床与教育》
2012年第4期386-388,F0002,共4页
Clinical Education of General Practice
关键词
海绵状血管瘤
磁共振成像
梯度回波
cavernous hemangioma
magnetic resonance imaging
gradient echo